Update docs for run --from-config

[lujunsan]

Adding updated docs related with the recent thv run --from-config changes

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Project	Deployment	Preview	Comments	Updated (UTC)
docs-website	Ready	Preview	Comment	Oct 8, 2025 3:55pm

[Copilot]

Pull Request Overview

This PR updates documentation to reflect recent changes to the thv run --from-config command behavior. The changes clarify that using --from-config creates persistent workloads rather than temporary ones, and adds restrictions on flag usage with this option.

Key changes:

• Updated behavior description for --from-config to emphasize persistent workload creation
• Added restriction that --from-config cannot be used with other flags
• Enhanced explanations across CLI reference and user guide documentation

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
docs/toolhive/reference/cli/thv_run.md	Added details about persistent workload creation and flag restrictions for --from-config
docs/toolhive/reference/cli/thv_export.md	Updated description to clarify exported configs create persistent, manageable workloads
docs/toolhive/guides-cli/run-mcp-servers.mdx	Enhanced explanation of --from-config behavior and added note about flag restrictions

[danbarr]

@lujunsan the reference/cli docs will get copied over via an automated PR when the next release gets cut. You might want to drop your changes from this PR to avoid a potential conflict?

[danbarr]

Not sure what "and saves a real configuration" file means here. If you mean the runconfig, I think that's a bit of an internal plumbing thing that the user doesn't really need to know/care about?

[danbarr]

Hey @lujunsan just wanted to make sure you saw this question and the comment above about the auto-update of the cli reference docs? Anything you need from me to help clarify this?